Press-in type efficient low-noise wellhead heat exchanger

Abstract

The utility model relates to the technical field of mine cooling, in particular to a press-in type efficient low-noise wellhead heat exchanger, which is characterized in that an equipment shell is mounted in an air inlet heat exchange chamber of a mine wellhead house, and an air inlet filter, a low-noise axial flow fan, a heat exchanger, a water retaining net and an adjustable shutter air window are sequentially mounted on the equipment shell from left to right; outdoor air is filtered, cooled and dewatered under the action of the low-noise axial flow fan, then is fed into a heapstead, and enters the underground along with a mine ventilation system. The device has the advantages that the problem that the heat exchange amount of equipment far away from a wellhead is small is solved, and the utilization rate of the equipment is increased; by adopting a forced air supply mode, the sealing requirement of the heapstead is reduced; the low-frequency and low-noise axial flow fan reduces the operation noise of the equipment and optimizes the working environment of the heapstead; the water retaining net collects condensate water, and overflow and disordered discharge of the condensate water are reduced. The fan is arranged on the air inlet side of the heat exchanger, and the heat exchanger can eliminate part of noise and reduce air outlet noise of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of mine cooling, in particular to a press-in high-efficiency and low-noise wellhead heat exchanger. Background Art

[0002] As mining depth increases, the problem of high-temperature heat damage in mines becomes increasingly serious. The high temperature and high humidity underground not only harm workers' health, but also greatly reduce labor productivity and even make mining work impossible.

[0003] In order to reduce the underground air temperature and improve the underground working environment, some high-temperature mines have implemented a wellhead full-air volume cooling system.

[0004] The wellhead full-air-volume cooling system utilizes a chiller to produce low-temperature chilled water. This system then uses a wellhead inlet heat exchanger installed in the wellhead room to reduce the inlet air temperature to below 20°C, achieving the desired wellhead cooling effect. Existing wellhead inlet heat exchangers utilize either unpowered surface coolers or suction-type wellhead heat exchangers. Unpowered surface coolers utilize natural convection for heat exchange. To achieve optimal heat exchange, this equipment requires a sealed retrofit of the inlet wellhead room. Natural convection heat exchangers utilize a low heat transfer coefficient, resulting in high investment costs, large variations in ventilation volume, poor performance, uneven cooling capacity, and low equipment utilization. Suction-type wellhead heat exchangers are known to exhibit high noise levels, high wind resistance, low air volume, and low heat transfer capacity.

[0005] To this end, the present application designs a press-in high-efficiency and low-noise wellhead heat exchanger to solve the above problems. Summary of the Invention

[0006] In order to make up for the deficiencies in the prior art, the utility model provides a press-in high-efficiency and low-noise wellhead heat exchanger.

[0007] The utility model is achieved through the following technical solutions:

[0008] A press-in high-efficiency and low-noise wellhead heat exchanger includes an equipment housing and is characterized by:

[0009] The equipment casing is installed in the air inlet and heat exchange room of the mine wellhead room. The equipment casing is installed with an air inlet filter, a low-noise axial flow fan, a heat exchanger, a water retaining net and an adjustable louver wind window from left to right. Under the action of the low-noise axial flow fan, the outdoor air is filtered, cooled and dehydrated, and then sent into the wellhead room and enters the mine through the mine ventilation system.

[0010] Furthermore, in order to better implement the present invention, an air inlet temperature sensor is provided on one side of the air inlet filter, a wind pressure sensor is provided on one side of the low-noise axial flow fan, and an air outlet temperature sensor is provided on one side of the adjustable louver wind window.

[0011] Furthermore, in order to better implement the present invention, the equipment housing is connected to a water collecting pan below the heat exchanger and the water retaining net, and a drain outlet is provided on the water collecting pan.

[0012] Furthermore, in order to better implement the present invention, the angle between the edge of the water collecting tray and the upper edge of the air outlet side of the heat exchanger is not less than 15°.

[0013] The beneficial effects of the utility model are:

[0014] The heat exchange efficiency of the heat exchanger is enhanced by adding fans. This avoids the problem of low heat exchange capacity for equipment farther from the wellhead, thereby improving equipment utilization. Forced air supply reduces the sealing requirements for the wellhead room. Low-frequency, low-noise axial fans are used to reduce equipment operating noise and optimize the working environment in the wellhead room. A water retaining net is installed to collect condensate, reducing its overflow and disorderly discharge. By optimizing the structure and placing the fan on the air inlet side of the heat exchanger, the heat exchanger can eliminate some noise and reduce the noise of the equipment's air outlet. Placing the fan on the air inlet side of the heat exchanger can increase the condensate discharge rate, prevent water accumulation on the heat exchange surface from affecting heat exchange, and improve the heat transfer coefficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of the press-in high-efficiency and low-noise wellhead heat exchanger of the utility model.

[0016] In the figure,

[0017] 1. Air inlet filter, 2. Equipment housing, 3. Low-noise axial flow fan, 4. Heat exchanger; 5. Water retaining net, 6. Adjustable louver air vent, 7. Water collection tray, 8. Drain outlet, 9. Air inlet temperature sensor, 10. Wind pressure sensor, 11. Air outlet temperature sensor. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in a variety of different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0020] Figure 1This is a specific embodiment of the present utility model, a high-efficiency, low-noise, push-in wellhead heat exchanger designed to replace existing unpowered surface coolers or suction-type wellhead heat exchangers for wellhead cooling. This device reduces or eliminates the need for airtight modifications to wellhead buildings, saving investment costs. It offers advantages such as low noise, high airflow, and high cooling capacity. The cooling effect of the wellhead air intake is superior to existing equipment, effectively improving the underground working environment.

[0021] This embodiment is arranged in the air inlet heat exchange room of the mine wellhead room. Under the action of the heat exchanger fan, the outdoor air is filtered, cooled, and dehydrated before being sent into the wellhead room and then enters the mine through the mine ventilation system.

[0022] In the summer, 7°C chilled circulating water is passed through the heat exchanger, cooling the outdoor air to below 20°C. The cooled air enters the wellhead room and then travels underground through the mine ventilation system, lowering the temperature and humidity in the underground working environment and significantly improving working conditions.

[0023] As air cools within the heat exchanger, a large amount of condensate forms on its surface. Most of this condensate flows down to the collection tray below, while a small amount is blown out by the wind. To reduce the amount of condensate entering the fan, a water retaining net is installed on the air outlet side of the heat exchanger. Condensate that hits the retaining net is intercepted and flows down to the collection tray below. Located at the bottom of the entire unit, the collection tray collects condensate from the entire unit, preventing unorganized condensate discharge.

[0024] To prevent unorganized discharge of condensate, the angle between the edge of the water collection tray and the upper edge of the air outlet side of the heat exchanger should be no less than 15°.

[0025] To ensure effective mine cooling, multiple high-efficiency, low-noise wellhead heat exchangers are installed in the air intake and heat exchange chamber of the mine wellhead room. The total air volume of the wellhead heat exchangers should be slightly larger than the wellhead intake air volume to achieve full wellhead intake air cooling.

[0026] The condensed water in the water collection tray is discharged through the drain port.

[0027] To reduce operating resistance and noise, the wind speed facing the equipment should not exceed 3.5m / s. The fan should be a low-frequency, low-noise axial flow fan.

[0028] The adjustable louver air outlet can adjust the air outlet angle and air volume.

[0029] In winter, heating circulating water above 40°C is passed into the high-efficiency, low-noise wellhead heat exchanger to prevent the wellbore from freezing.

[0030] The specific working process of this embodiment is as follows:

[0031] In summer, 7°C chilled circulating water flows through the heat exchanger. Low-noise axial fan 3 is activated, and outdoor air, under the influence of internal and external pressure, enters the surface cooler for cooling. It first flows through filter 1 for filtration, improving air cleanliness, and then flows through heat exchanger 4 for cooling and dehumidification. The outdoor air temperature drops from 34°C and 70% relative humidity to below 20°C and 95% relative humidity, achieving the desired cooling and dehumidification. The cool air flows through a water retaining net 5, removing condensed water from the air, and is finally delivered to the wellhead room through adjustable louvered outlets 6. Condensed water collected by heat exchanger 4 and water retaining net 5 flows by gravity into a water collection pan 7 and is discharged through drain 8. Temperature sensors 9 and 11 monitor the inlet and outlet temperatures of the airflow to regulate the flow of chilled circulating water through heat exchanger 2. A wind pressure sensor 10 monitors the pressure inside the heat exchanger. If it exceeds 100 Pa, the heat exchanger's resistance, the filter and heat exchanger require cleaning.

[0032] In winter, heating water with a temperature of no less than 40°C is passed into the heat exchanger, heating the mine air from below -10°C to above 10°C to meet the anti-freezing requirements of the shaft.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A press-in high-efficiency and low-noise wellhead heat exchanger, comprising an equipment housing (2), characterized in that: The equipment housing (2) is installed in the air inlet heat exchange room of the mine wellhead room. An air inlet filter (1), a low-noise axial flow fan (3), a heat exchanger (4), a water retaining net (5) and an adjustable louver wind window (6) are installed on the equipment housing (2) from left to right. Outdoor air is filtered, cooled and dehydrated under the action of the low-noise axial flow fan (3) and then sent into the wellhead room and enters the mine through the mine ventilation system.

2. The press-in high-efficiency and low-noise wellhead heat exchanger according to claim 1 is characterized by: An air inlet temperature sensor (9) is provided on one side of the air inlet filter (1), a wind pressure sensor (10) is provided on one side of the low-noise axial flow fan (3), and an air outlet temperature sensor (11) is provided on one side of the adjustable louver window (6).

3. The press-in high-efficiency and low-noise wellhead heat exchanger according to claim 1 is characterized by: The equipment housing (2) is connected to a water collecting tray (7) below the heat exchanger (4) and the water retaining net (5), and a drain outlet (8) is provided on the water collecting tray (7).

4. The press-in high-efficiency and low-noise wellhead heat exchanger according to claim 3 is characterized by: The angle between the edge of the water collecting tray (7) and the upper edge of the air outlet side of the heat exchanger (4) is not less than 15°.

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